274749390 has 48 divisors (see below), whose sum is σ = 719594928. Its totient is φ = 72728448.

The previous prime is 274749341. The next prime is 274749407. The reversal of 274749390 is 93947472.

274749390 is a `hidden beast` number, since 2 + 7 + 474 + 93 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1189 + ... + 23471.

It is an arithmetic number, because the mean of its divisors is an integer number (14991561).

Almost surely, 2^274749390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 274749390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359797464).

274749390 is an abundant number, since it is smaller than the sum of its proper divisors (444845538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

274749390 is a wasteful number, since it uses less digits than its factorization.

274749390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22433 (or 22430 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 274749390 is about 16575.5660536828. The cubic root of 274749390 is about 650.0981232537.

It can be divided in two parts, 27474 and 9390, that added together give a square (36864 = 192²).

The spelling of 274749390 in words is "two hundred seventy-four million, seven hundred forty-nine thousand, three hundred ninety".